The effect of radiation pressure on the formation of planetary nebulae
Abstract
By the investigation of very luminous red giants, analysis shows that the outer region is mass dominated and the inner regions, near the core, radiation dominated. This structure favors radiation pressure ejection. Analytical elementary models demonstrate that a thin shell of matter supported by a deep radiation cavity can have equilibrium configurations. From two equilibrium models, four hydrodynamical model envelopes were computer generated. From the output, each envelope was unstable to either dynamical or thermal perturbations, reaching several tens of kilometers per second in about ten to a hundred years.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1978
- Bibcode:
- 1978PhDT.........7H
- Keywords:
-
- Nebulae;
- Planetary Evolution;
- Pressure Effects;
- Radiation Pressure;
- Dynamic Models;
- Perturbation;
- Red Giant Stars;
- Stellar Evolution;
- Astrophysics